Radiator construction



Aug. 2, 1932. .1. KARMAZIN RADIATOR CONSTRUCTIUN Filed May 28. 1927 Y lNvENToR .fom/ MRM Y BY Patented Aug. 2, 1932 JOHN KARMAZIN, OF DETROIT, MICmGN IATOB, CONSTRUCTION Application filed May 28, 192?. Serial No. 194,899.

This invention relates to radiators, condensers and the like, and particularly to radiators of the fin and tube type in which the fluid conducting tubes are formed" by the 5 nesting of tapering tube sections carried by and extending transversely from superposable fin elements. Such a radiator is disclosed in my prior copending application, Ser. No. 641,850. y

l It is an object of the present invention to provide an improved means for securing a iiuid tight joint between successive tube sections in a radiator of the type above mentioned. V A further object of the invention is to provide a solder receiving space between parts of the nesting tube sections while maintaining close Contact between other adjacent parts.

A further object of the invention is t provide tube sections comprising varying degrees of taper, and to utilize the varying taper in securing fluid tight joints between successive tubes and to increase the strength of the radiator.

A further object of the invention is to so construct the nesting tubes that a recess of wedge shaped cross section is provided between successive tubes for the reception of a sealing medium. 39 With these and other objects in view my invention consists in the novel devices, combinations and arrangements of parts which are illustrated in the drawing, and will be hereinafter more fully described.

In the drawing:

Fig. 1 is a fragmentary front elevation of a radiator of a type to which the lpresent invention is applicable.

Fig. 2 is a fragmentary sectional elevation *U of a tube embodying one form of the present invention.

Fig. 3 is a fragmentary sectional elevation of a tube embodying another form of the invention.

5 with a number of projections 6, and the pro- The radiator consists of a number of simijections of each iin are adapted to nest within I the projections of the next lower lin to form continuous tubes which are provided at their ends with suitable outlets or connecting devices, all as more fully explained inl my prior copending application above identified.

The present invention contemplates a novel and effective means of securing iiuid tight joints between the successive tube sections. j To this end the sections are so formed that when nested together a part only of the overlapping walls are in contact, one or more annular tapering recesses being provided 'ue-l tween the remaining `overlapplng sections, for the reception of a sealing medium such as G5 solder.

Various constructions may be used for this j purpose. In the embodiment of the invention illustrated in Fig. 2, for example, each tube section comprises two distinct parts 7- 70 and 8 having different angles of taper. The part 7 adjacent to the fin 5 tapers more than the end portion 8. Thus when the sections are nested together a portion. of the slightly tapering end section 8 of the inner section 75' lies adjacent the more sharply tapering part 7 of the outer section, leaving an annular Wedgeshaped recess between them. The recesses thus formed are lled with an adhesive sealing medium 9, such as solder.

in the form of the invention illustrated in Fig. 3, the tube sections 6 do not comprise two distinct parts having diderent angles of taper, but each cross section of the tube Walls forms a continuous arc, the taper of the tube thus gradually decreasing from the fin 5 toward the end of the tube. Obviously when such tubes are nested together their walls contact only for a limited distance near the end of the inner tube, and a space which increases in Width toward the fins 5 remains between a part of the overlapping portions of their walls. which space may be filled with solder or other sealing medium 9a.

To facilitate transverse circulation of the fluid within the tubes as well as to secure ad# ditional solder space, the eXtreme tips of the tube sections may be turned inward slightly, asillustrated at 10in Fig. 2, and the space thus provided between the inturned tip 10 10Q and 'the wail of joe acen'; @be secioi soice il, "provlmg secondi be i'iiieo. *mm Wedge siiepe soiieif seai betweeii ehe Wais of acijace'nt tub-es.

Means loiposiaiveiy Securing the pmts o a sec'ionei tube 'together Wi'ii iuid tight joints is hus simply and ehezipiy povied. The piovisioii of the soiei coneiiing recess, moi'eover? peimis of Wiei iimis of eecuiecy in the memiecuie of the tubes? Huis decreasing both the 'bool cos and he iiuni'oe of ie- Lieecions on account of inaccuracies in size. The production of assembed radiate-f cooiing sections is thus eciiicaei amai ciieepened.

The specific emoociimens of the invention which are shown in the drawing am have been cescribe. in detaii ei'e io be iegoicieei is illustrative mike? than ies'tiicivea the in- Venzion being readily suseepioe ei ooe'f Verbe@ claim es my invention is:

l. Am eiemem; for e seeiomel hij ula?? cediatoi eompiising" a fin deinem4 having 5 ing tubuai piojections extemiing 5" each projection eompiisiig sect1' ferent degfees of eper? fiile W tions meeing in an angiee ano r the projections vbeing); tunec 2. il iaiaioi cooling section eompisig e pumlity of supeiposei fin eemens hein ing subuki projecons 'imsveee 1y therefrom emi nesting with Jie og'eefioms of the adjacent element. sei 'son ei* poiections having sections of subsoengieiy oii f ent degl es of tepel in the nes'ec poitio, provide zi puiaiity of ennuie? spaces oeween the overlapping Weiis of the tube eecionsq soer in said spaces uniziig saiei pojee into a coniinuous wise, 

